Submission #2173074


Source Code Expand

#include <bits/stdc++.h>
//#include <math.h>
using namespace std;

#define INF 1.1e9
#define LINF 1.1e18
#define FOR(i,a,b) for (int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
#define pb push_back
#define pf push_front
#define fi first
#define se second
#define BIT(x,n) bitset<n>(x)
#define PI 3.14159265358979323846

typedef long long ll;
typedef pair<int,int> P;
//typedef pair<int,P> PP;

//-----------------------------------------------------------------------------

P p1,p2,p3;

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	cin>>p1.fi>>p1.se>>p2.fi>>p2.se>>p3.fi>>p3.se;
	double a=hypot(p1.fi-p2.fi,p1.se-p2.se);
	double b=hypot(p2.fi-p3.fi,p2.se-p3.se);
	double c=hypot(p3.fi-p1.fi,p3.se-p1.se);
	double r=fabs((p2.fi-p1.fi)*(p3.se-p1.se)-(p3.fi-p1.fi)*(p2.se-p1.se))/(a+b+c);
	//double r=2*S/(a+b+c);
	double ma=max(a,max(b,c));
	double lb=0,ub=INF;
	REP(i,200) {
		double mid=(ub+lb)/2;
		if(ma*(r-mid)>=2*mid*r) lb=mid;
		else ub=mid;
	}
	printf("%.15f\n",lb);

	return 0;
}

Submission Info

Submission Time
Task B - Inscribed Bicycle
User moko_freedom
Language C++14 (GCC 5.4.1)
Score 500
Code Size 1084 Byte
Status AC
Exec Time 1 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 2
AC × 18
Set Name Test Cases
Sample example0.txt, example1.txt
All 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, example0.txt, example1.txt
Case Name Status Exec Time Memory
000.txt AC 1 ms 256 KB
001.txt AC 1 ms 256 KB
002.txt AC 1 ms 256 KB
003.txt AC 1 ms 256 KB
004.txt AC 1 ms 256 KB
005.txt AC 1 ms 256 KB
006.txt AC 1 ms 256 KB
007.txt AC 1 ms 256 KB
008.txt AC 1 ms 256 KB
009.txt AC 1 ms 256 KB
010.txt AC 1 ms 256 KB
011.txt AC 1 ms 256 KB
012.txt AC 1 ms 256 KB
013.txt AC 1 ms 256 KB
014.txt AC 1 ms 256 KB
015.txt AC 1 ms 256 KB
example0.txt AC 1 ms 256 KB
example1.txt AC 1 ms 256 KB